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` '25 the stopping of the loom. For coarse work under 'liil'erent conditionssrnrns ienrnn'r OFFICE.

JOHN REGAN, or NEW neuroni, Messnonnen'rrs, nesronon ro ononrron e 'KNOWLES Loom Wonne, or Wonensrnn. Mnssonnsnfr'rs, A oonronnrion oF MASSACHUSETTS. 1

` Wear eroe-MOTION.

14,829. Specification et Itetssued Letters Patent. Rgiggued 31am 30! 1920.

Original No. 1,265,112, dated Hay 7, 191B, Serial No. 16o,t27l5, .led April 6i lill?. Application for reissue i i flied October 26, 1918. Serial No. 259,876. To all idiom 'it may confiera.' wire engages a fixed member and oscillation lle it known that l. Jones linnen, a eitiof saidV rod is thereby prevented. ,This con- 55 zen of the United States, residing at New struction is found to be extremely reliable Bedford, in the county of l'lristol and State in operation and does not require any. spe- 5 of lllasszufhusntts, have invei'lted a new and cial aceurney in the making' ofthe) parts of useful larp Stop-Motion, of which the fol# the stop n'lotion. lowingjT is a specification. Other important features of my inyention ,6G

This invention relates to a warp stop mo relate to the provielon of a single rod'onloar tion of the type in which al fallen drop ,ionly extending through the openings'in the Wire renders certa-in mechanicaldevices efdrop Wires, wherebyv Said rod is accessible fective to stop the loom. from all sides throughout its entire 'lengt-li.

Warp stop motions of this ,general type lily invention further relates to certain 65 are in very Common use and :is usually huilt arrangements vand combinations of parts comprise' a vibrator bar hav'ng an oseillatwhich will he hereinafter described andV ing movement beneath the dro'p wires. The inore particularly 'pointed out in the ap,-

vbrator is mounted to swing elose as pospended claims.

sible to a second har fixedto the traine of A preferred, ForniA of my :invention fis 7n the Stop motion. hen a. drop wire is reshown in the drawings, in which leased bythe breaking of a warp thread it Figure l is en end elevation oil? my imfalls'between the vibrator har and the secproved stop motion;

0nd or lined bar, and thusl prevents move- Fig. 2 is a partial front elevation oi3 the ment of the vibrator bar past and beneath parts shown in Fig. l.; the fixed liar. Such niteriiereneo with the Figs. 3 and are' diagrammatic end elefree movement of the vibrator har causes rations showing the operation of the parte 7 the results are reasonably satisiiaotory, hut Fig. shows the relative position ol the on very tine work 'for which the drop wires drop Wire and detector under normal eondiso are'neoessarilv made of extremely thin stock tions, and it is found that a stop motion oi this type Fig. G shows the relative position which ,oinust be mede with extreme neem-ary in the dropy wire end detectorA assume upon order to he reliable. Unless the vibrator the breaking of a warp tlnfen-d.

har swings as close possible beneath the In Fig; l and 2 l havey shown the operar 35 fixed har, the very thin and flexible drop tire end of a werp stop motion. including' w'res will hond and slip betveen the viln'nthe mechanism-for angularly moving the de tor and the fixed har without stopping the .tector rods. T he detecting mechanism is loom. mounted upon a frame l0 adjustably secured It is the general object ol? my invention to to arod 1l fixed Vto the loom side (not 9G avoid such necessity for extreme aeoureoy shown). Thefrarne l0 is conli'eeted'hy hars' by providing a warp stop motion in 'which 12 to a similar frame et the-opposite side 40 the loom stopping mechanism is rendered efof the Iloom. The bars l2 'are separated feotive hy the direct cooperation of a'fallen :suiiieiently to permit the drop Wires 13 to drop wire with a detector preferably entendswing freely betweenthem, the stop motion g5 in through an opening in each drop Wire.' shown in the drawings being arranged with n the preferred 'form of my invention the two sets or' 'banks or" wires EB and rel'iiiring opening in the drop wire isi'orm'ed with three bers 12. I

wide and narrow portions. and the detector The wires 13 may he of ditl'erent Welkis in the form of a rod of non-circuler known styles in neeoirlanee with the particu; 3.80 -eross section extending through the openlor Class of goed upon which they are to ings inthe drop wires and nori'nallv osoillat` he used, the wire shown in the drawing bem '50 ing freely therein. Upon the falling;` of a ing slotted at ite lower end and lieingrloro4 drop Wire `the narrow upper portion ol the -vided .iitl an open ripening 1n the fallen `wire engages the dew e tectorrod While another portion of the dren portion leb.

its nppeimend end a. narrow 11.5%

lilach bank ot' wires 13 cooperates Awith a. detecting rod 15 which extends through the wide portion 14a of the drop wires when they are in normal position. The rod 1411s of non-c1rcular cross section and each end of the rod is preferably supported in a circular bearing block 16. The bloei( 16 at the operz tive end of the'stop motion shown in Figs'. l and 2 is provided Ywith a downwardly ei;-

tending-arm 17vr having a stud or projection 18 at its lower enl.` v Y The bearing'blocks 16 are secured in position by a plate 20 (Fig. 1) pivoted at 21 to the trame lOf and `being normally posi- ,"irtined bya stop 22 so that the lower portion of the plate 20 covers the bearing blocks 16, retaining them in the frame 1Gr and preventing the longitudinal removal or displacement of the rods` 15. 1When it is de- 20 sired to remove either of the detecting rods the plateV 20 is' swung upward' and toV the right in Figyl to uncover the ends oi the rods'.

A link 23 is mounted on the studs 1S at 2,5 the lower ends of the arms 17, said huir bei ing itself provided with a stud 2i extend ing outwardly into position to engage a slot- "ted lever 25. The lever 25 is pivoted on a stud 2.6 'a-rried by an arm 27 which in turn swings on a pivot 28 fixed to the 'iramel The lever 25 extends upwardly bey-'ond the stud 26 and at its upper end is provided with a stud .30`v upon whichwis pivoted one end of a link 31 through which the knock 0H mechanism is controlled'.

The arm' 27 is regularly oscillated through an actuating linkA '32"by which the. arm' is l connected to actuating mechanism not shown. The'arin 27 also supports a spring 40 plunger 33 'engaging the lever 25 and by v which the lever is retained yieldingly in the position shown in Fig. 1. For a complete description `of lthe actuating mechanism, reference is made to the patent to lliyman,

,45 No. 665,713, issued January 8,1901.

Under` normal conditions thc slottedlever 25 moves in unison with the arm 27 about the pivot 28-.as a henter, swinging the link 23, the studs 18.and arms 17 to the right and left to the dotted line positions shown in Fig. 3, and thereby oscillatingthe detector rods 1.5 about the axes ofthe circular bearing blocks 16. vThis tree oscillation. of the detector lrods will continue soV lone4 as e5 the drop 'wires are all-in the raised position shown in Fig'. b. Y,

When one of. the warp threads breaks the v corresponding d rop wire falls'to the posi- `tion shown 1n Fig. 6, engaging the detector rod between the sides of the narrow portion 111 ofthe opening 14. Simultaneous engagement of the wire with a fined bar 12 renders normal oscillation of the rod impossible yand accordingly the arms 1'?, the studs 18'and link 23 are held in the posif ien shown Q insee in Fig. fi, thus causingthe stud 24 on the linlr 23 to act thereafter as a xed pivot' for the slotted. lever 25, which thereafter swings about the pivot 24.- and moves the link 31. to the right or lett to one ot the dotted line positions shown in 4l.

this linkA in either direction. places the knock-ofi' mechanism in operation to stop the loom. `vlli/Thilo the angular movement ot' the detecn tor .is herein shown as an oscillatory Inovenient, my invention is not limited to any particular form of movement, continuous or intermittent movement in a single direction is equally adapted to the purposes herein described.

Having thusv described my invention the Such movement f is not de iendent in anv wav u ion the relative position or adjustment of other parts. lt vwill be also'imted that the cross section of the rod 15 may be varied as desired pro vided only that a nou-circular cross section be used.

The engagement of the fallen Kdrop wire with the detector rod occurs two separated points, preferably at opposite sides of the axis ot said detector, and when thus engaged, movement of the drop Wire 'by the detector is prevented by engagement of the fallen drop wire with some adjacent fixed member, as the guide bar 12. The utility and value of my invention reside to a considerable extent in this three point engagement of the drop wire.

lt should be noted that the location of the opening 14: above the warp threads, While classes of goods it may be found desirable to `position the detector rods below the Warp threads'. i

It will be also evident 'that other changes and modifications can be made in my iniproved stop motionwithout departing ro'nr the spirit and scope or' my invention as set forth in the claims, and l ldo not wislrto be otherwise limited-to the 4details herein disclosed, but what l do claim is :-f

`hina-tion, a plurality ot' drop wires each hav ing an opening thereinja detector e'xtendingthrough said openings land-'normally freely movablethereimmeans to give said detector operative oscillatory' movements in two directions, and means to stop the 4leoni when the movement of vsaid"detector ineitherdireetionis prevented, each drop 1. A warp stop motion having, in coin-l ilo' normal position, said detector movable 1n said Wide portion of said openwire when unsupported by a warp thread bemg effective to prevent movement of said detector.

2. A Warp stop' motion comprising a plii 5 rality of drop Wires each having an openings, but being held from movement when in `the'narrow portion of the opening in a fallen drop wire 1 5 two. opposed sides ofthe opening at said narrow portion, means to move said detecto`r, and means to stop the loom when the movementoi said detector is prevented.

3. A Warp stop motion comprising a'plu- 2q ralit)T of drop Wires each having an opening'therein with a Wide loiver portion and a narrow upper portion, a single rod of nonoircular cross section extending freely through said wide lower portion of said openings when the wires are in normal position, means to oscillate said rod, said rod being free to oscillate when in said wide portion but being held by, the drop wire from movement in either direction when in the narrow portiono theopening in a fallen drop wire, and means to stop thelooin when said rod is held from oscillation.

4. A warp stop motion oomprisinga detector rod of non-circular cross section, oircular bearing blocks supporting the ends of said rod, bearings for said blocks, means connected to one of said blocks to oscillate said blocks and rod, and a movable device effective to normally prevent longitudinal removal of said rod from said blocks, but

permitting such removal when said device /is moved from normal position.

A Warp stop motion comprising drop wiresarranged in a i'i'liirality .of sets, each ,drop wire having an irregular opening therein, a' detector rod of non-circular cross section extendingr thronglilthe openings in each set of drop wires, cirenlar Ibearing blocks for each detector rod, bearings for said blocks, arms connected to said blocks,

a link connecting said arms, and actuating mechanism for moving said link, said rods and link being held from movement by a fallen drop wire, cooperating with a fixen member Yand said actuating mechanism being thereby rendered effective to stop the floom.

6. A warp stop motion for a loom comprising a plurality of drop wires mounted independenti.)r of the loom harnesses, a detector, a member fixed adjacent a fallen drop wire, means to give said detector a Ivicldinnr detecting movement vabout an axis thereof,

and means to stop the loom when normal movement of said detector is prevented, said lined member at by engagement with. the

detector being freely movable about said axis when all or said drop Wires are in normal 'iiositioin and being held from movement f by engagement by a fallen drop wire attwo said axis while said drop -wire engages said a third point.

T. A warp stop motion comprising a plu-l rality of `drop Wires, a fixed member, a detector. means to give said detector a detecting movement about an axis thereof, and means to 'stop the loom when normal angular movement of said detector is prevented, said detector oeing freely movable about said axis when all of said drop Wires are points liametrically separated in respect to l in noi-nml position, and being held from normal angular#movement by engagement by a i'allen drop wire at tivo ioints oppositely disposed iii respect to said1 'drop wire simultaneously engages said fixed member at a third point. Fs. A wai-p stop motion comprising a pluralitiY of drop wires, a single detector, means to give said-i'letector a detecting movement, a fixedfmember,positioned adjacent fallen drop wire, and means to stop the loom when the'detector is held from normal movement, said drop wiresv being each provided With an opening having a portion within which said detector is freely movable when said axis, while said drop.. wires are in normal'position, and hair-"l ing another portion with edges ada 'ind to engage said detector at after the drop wire falls, said fallen drop wire at the same. time engaging said fixed member and through such joint engagement two Separate pointsfv preventing normal movement 'of said detectoil. y

`9. A warp stop motion comprising a plu i'ality'fot' drop wires each having an opening therein with a Wide lower portion and a narrow upper portion', a single detector extending freely through said wide lower portion 'of said opening when-the vwires are in norma-l positioma. fixed member positioned adjacent a fallen drop wire but spaced from said detector, means to give said detector a yielding detecting movement, andr means i o stop the loom when normal movement of said detector prevented, ,said detector being iree to more when in the wide lower p0rtion ofthe drop wire openings, but being 'held from movement when in the narrow upper portion of the opening in afallen drop wire, and said fixed member being eflective to restrain movement of Said fallen drop wire and said detector wire engages said detector.y y 10. A warp stop motion comprising a bank of drop wires each having an opening when said dropI therein with a wide lower portionan'd a v Y 14,829 I* v nl'ireswhen the Wires are in normal position, means to restrain movement of said drop mean's to give jsaid a detecting-more Wire by' Said deteetorwhen thus engaged, 10 ment, said rod being free to move when in and means to stop the loom when said rod is the Wide lower portionsv of saitl .openings held from normal movement.

' 5' but being engaged by the rop wire when In testimony whereof I llave hereunto afin the narrow upper portion of the opening fixed my signature. in a fallen drop Wire and being held thereby 'from normal movement relative to 4said Wire, JOHN REGAN. 

